Rotary steam-engine



, PATENTBD JUNE 5, 1847.

'3. BLACK.

ROTARY STEAM ENGINE.,

JAMES BLACK, OE PHILADELPHIA, PENNSYLVANIA.

ROTARY STEAM-ENGINE. n

Specification of Letters Patent No. 5,714.2, latedJune 5, 1847.

T0 all whom t may concern:

Be it known that I, JAMES BLACK, of the city and county of Philadelphia and State of Pennsylvania, have invented a new and Improved Rotary Steam-Engine; and I do hereby declare the following to bea full, clear, and eXact description of the construction and operation thereof, referencebeing had to the accompanying drawings, making a part of this specification, in which- Figure l, is a perspective view; and Fig. 2, is also a perspective view of the same, with one of the inclosing side casings removed. Figs. 3, 4, 5, and 6, are sectional views showing parts of the engine indetail.

Similar letters refer to corresponding parts in all the figures.

The nature of my invention consists in the constructing a steam wheel with a double series of curved buckets secured to its periphery, closed at their sides and divided by a central division plate, with the spaces between the series of buckets on each4 side of the division plate connected by curved apertures; and the arranging the steam wheel within an inclosing casing in such a manner that steam admitted to the buckets on one side of the central division plate, will act directly upon. the wheel by impinging upon the face of the buckets, and descending to the base of the same, will passy through the connecting apertures to the series of buckets on the opposite side of the division plate, and in escaping from/ between which, it will react upon the face of the buckets, and give additional impetus to the wheel.

The steam wheel is constructed as follows: A, is a central metallic disk with a thin division plate e, projecting from the center of its periphery; B, B, are metallic annular plates with a series of curved buckets b, b projecting from and castv solid upon one of their sides. The plates B, B, are accurately fitted and bolted to the sides of the periphery of the disk A, the buckets b, b, and the division plate e, being previously ground and tted to each other so as to form steam tight joints between the same, when brought together. Curved apertures 0, o, are formed in the periphery of the disk A, under the base of the division plate e, uniting the spaces between the series of buckets b, Z9, on opposite sides of the division plate. The series of buckets b, b, on each of the annular plates B, B, exactly correspond with each other in Y form, and are placed opposite to each other. The steam wheel when thus formed is in-y closed between two side casings F, and G, secured to each .otherby projecting flanges and screw bolts 'in the usual manner. disk A, may bel secured to the end of the shaft E, and the shaft work in bearings attached to the casingGr, or the shaft may i lp ass throughand work in bearings in both `side caSings. There is a space surrounding the steam whee1,between` its periphery and the inclosingcasing, and also at the sides of the steam wheel. C, is a metallic segment secured to the side casing Gr, inclosing a portion of the ,buckets on that side of the steam wheel, being ground and fitted to thev peripheries of the division platee, and to one of the annular platesB, as also to the extremities of the buckets Z), Z2, with the most perfect accuracy.

Fig. y5 is a section of the segment C. The

steam pipe a, passes through the side casingl scending to the base ofthe buckets, the

steam passes through the apertures c, c, and escapes between the buckets on the opposite vside of the divisionk plate; in doing which it reacts upon the face of the buckets and gives additional impetus to the steamwheel. As many jets of steam may be admitted to the steam wheel as may be desired, by elongating the segment C, or by inserting others.

The buckets may be varied in depth or curvature as may be found expedient.

The waste steam is conducted freely from the inclosing casing by the escape pipe d.

It is evident that the expansion of the steam will increase the velocity with which it will escape from between the buckets, and consequently will add to its power of reaction upon the wheel.

Having thus fully described the construction and operation of my improved rotary engine, what I claim therein as new and desire to'secure by Letters Patent, is-

The double series of curved buckets upon the steam wheel, with' the spaces between the same united as herein described, com# bined with the steam pipebymeans of the 'segment C, substantially in the manner and Z. C. RoBBINs, GUY C. HUMPHEIES.

llO 

